用黏土模具来浇铸青铜塑像。A clay mould is used for casting bronze statues.最近他们学会了浇铸轻型水泥船.Recently they had learned to cast light concrete boats.采用钢的连续浇铸法很重要.Of great importance is the introduction of continuous steel pouring....
类蛋白体:指储存蛋白质的无色质体 ( 白色体 ).Proteoplast A colorless plastid ( leucoplast ) that stores protein.白色体:叶在生长过程中完全置于黑暗条件下,由前质体形成的变化了的叶绿体.Etioplast A modified chloroplast formed from proplastids in leaves grown in total darkness....
Electrons can jiggle and wiggle in a more energetic manner.原子能以更有力的方式旋转与振动.Better get a wiggle on or we'll be late.最好快一点,不然我们要迟到了.He has gone wiggle - waggle and cannot be persuaded to categorical.他犹豫不决,无法劝他持明确的态度.W...
She was often downright rude to him.她常对他十分粗鲁。Staff are often discourteous and sometimes downright rude.职员常常态度很不礼貌，有时候极其蛮横。There was suspicion and even downright hatred between them.他们之间相互怀疑甚至极度仇恨。...
您正在收听的是《科学在行动》，由BBC全球广播频道制作播出。You're listening to Science in Action, brought to you by the BBC World Service.你正在收听的内容来自2039航班上的飞行记录器,也就是人们叫做“黑盒子 ” 的那个东西.This is what you'd call the flight recorder of Flight 203...
Dirac's theory also predicted a negatively charged sister for the proton, called the antiproton.狄喇克的理论还预言有一种质子的姐妹粒子,带负电荷, 叫做反质子.Similarly the positively charged proton has a negatively charged antiparticle, the anti...
a reversal of current trends目前趋势的转变This marked a 7% increase on the previous year and the reversal of a steady five-year downward trend.这标志着在前一年基础上有了7％的增长，扭转了5年来持续下降的趋势。That would be reversal of the order of host and gue...